3645215658887 has 16 divisors (see below), whose sum is σ = 4011306593280. Its totient is φ = 3312308977560.

The previous prime is 3645215658871. The next prime is 3645215658893. The reversal of 3645215658887 is 7888565125463.

It is not a de Polignac number, because 3645215658887 - 2⁴ = 3645215658871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645215058887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2271818 + ... + 3528680.

It is an arithmetic number, because the mean of its divisors is an integer number (250706662080).

Almost surely, 2^{3645215658887} is an apocalyptic number.

3645215658887 is a deficient number, since it is larger than the sum of its proper divisors (366090934393).

3645215658887 is a wasteful number, since it uses less digits than its factorization.

3645215658887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259075 (or 1259053 counting only the distinct ones).

The product of its digits is 387072000, while the sum is 68.

The spelling of 3645215658887 in words is "three trillion, six hundred forty-five billion, two hundred fifteen million, six hundred fifty-eight thousand, eight hundred eighty-seven".